Carbureter.



F. S. LOBDELL.

cAmsuRETER.

APPLICATION FILED MAR. 8. 1915. I

Patented Aug. 31, 1915.

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1,152,031. Pfg.;

l/vvf/von Anon/vir FRANK S. LOBDELL, F NAUG-ATUCK, CONNECTICUT.

CARBURETEB.

This invention has for its object to provide a carbureter in which the supply of gasolene or other hydrocarbon shall be un der more effective control than heretofore, whereby waste of the hydrocarbon is prevented and an engine may be rendered more eiiicient with a reduced consumption of hyfdrocarbon my invention 'being especially It is obviously however within the principle nozzles 16, outside of which are throattubes v adapted for use on automobiles, and its value"`appearing when it is required to increase'v or reduce speed or in passing from a goodstretch of road to a bad one, or from a level road to a steep grade, and vice versa. This result I accomplish by providing a plurality of jet nozzles, a corresponding number of throttle valves and mechanism for opening and closing said valves successively with a continuous movement.

In the accompanyingy drawingforming a portion of this specfiiication, Figure 1 is an elevation of my novel carbureter; Fig. 2 a vertical section on planes at right angles to the plane of Fig. 1, one plane cutting the gasolene reservoir, the other cutting one` of the mixing chambers; Fig. 3 a section on the line 3-3 in Fig. 2, looking in the direction of the arrows, and Fig. 4 is a diagrammatic view of the valve mechanism detached, and illustrating the operation thereof, one of the valves (in full lines)r being fully open, the other remaining closed.

I have illustrated a structure embodying two mixing chambers only and the corresponding valves and operating mechanism.

of the invention to increase the number of mixing chambers and valves.

-10 denotes the body within which are mixing chambers 11, each closed by an independetly operated throttle valve, said valves being indicated respectively by 12 andi 22.

13 denotes the hydrocarbon reservoir within which is a oat 14 operating in the usual manner. Fromy the reservoir the hy-f drocarbon passes through ducts 15 to the jet 17.` The openings in the jet nozzles are made -relatively small, which, greatly ims Specication of Letters Patent.

Patented Aug. 31, 1915.

.Application l'ed March 8, 1915. Serial No. 12,751.

proves the vaporization. The primary air supply 1s .through passage 18, and the secondary a1r supply through passages 19 which are normally closed by spring-controlled valves 20. Throttle valves 12 and 22 are carried respectively by shafts 21 and 23.

24 denotes an operating rod to which a lever 25 is pivoted. A link 26 connects one end of this lever with an arm 27 extending from\shaft 2l, and a link 28 connects the other lend of said lever with an arm 29 extending from shaft 23. A spring 30 con"- nected to the free end of arm 29 and to a fixed support acts to retain valve 22 in the closmg-position until valve 12 has been fully operated. Stops 31 and 32 engaged by arms 2 and 29 respectively act to limit the opening movement of the valves.

The operation will be readily understood by comparing Fig. 4 with Fig. 1, which shows the normal osition of the parts, both throttle valves bemg closed. The throttle valves are opened successively by a continuous movement of the operating rod toward the right from the position shown in Fig. 1. The first eii'ect of movement of the operating rod will be wholly upon valve 12, for the reason that spring 30 will retain valve 22 .closeduntil valve 12 is in the fully lopenl position and arm 27 is in engagement with stop 31. After the movement of arm 27 has been stopped, and valve 12 is fully open, continued movement of the operating rod toward the right will overcome the soL p power of spring 30 and will swingarm 29 l toward the right, which will open valve 22.

upon valve 22, this for the reason that.

spring 30 will act to move valve 22 toward theclosing position the instant the operating rod is moved from its extreme position toward the right, so that valvey 12 will remain wholly open until valve 22 is wholly closed. Further movement of the operating rod toward the `left will then act to move valve 12 toward the closing position.

Having thus described my invention I claim 1. A carburetercomprising a` plurality of lio mixing chambers, a throttle valve for each chamber, shafts for said valves, arms extending from said shafts, an operating rod,

connections between said rodA and the arms, and resilient means for normally retaining one of said valves-closed against the action of the operating rod until the other valve hasbeen fully opened, continued movement of the operating rod then overcoming the resilient means and opening the other valve.

2. A carbureter comprising a plurality of mixingchambers, a throttle valve for each chamber, shafts for said valves, arms extending from said shafts, an operating rod,

a lever pivoted to said rod, links connecting the ends of said lever with the respective arms and a spring acting on one of said arms to retain the corresponding valvestationary until the other valveis fully opened `or closed.

3. A carbureter comprising a plurality of mixing chambers, a throttle valve for each chamber, shafts for said valves, arms extending from said shafts, an operating rod, a lever pivoted to said rod, links connecting the ends of said lever with the respective arms, a spring acting on one of said arms to retain the corresponding valve stationary until the other valve is fully opened or closed, and stops for limiting the opening 4 movement of the valves.

4. A carbureter comprising a plurality of l ment to successively open one valve and then the other, the spring acting in the closing movement to close the last opened valve before the first opened valve commences to close.

In testimony whereof I affix my signature in presence of two Witnesses.

FRANK s. LOBDELL.

Witnesses:

G. F. WIGMORE, B. N.l W1LMoT.` 

